Well, of course, communication. And of course I don't think humans can be separated from their inventions, they really are what makes us human.
But still, you'd think we'd profit hugely from a Newton/Einstein/Feynman/von Neumann/whatever having some more time on earth.
But of course, we haven't stopped evolving, and of course if you look at how life expectancy is changing, we've made huge strides. Oh well, we'll see.
(You are all right)